When should you calibrate your equipment?

• A. Every day
• B. Minimum once a year to manufacturer's specifications
• C. Monthly
• D. Every 5 years

Answer: (B)

Regular calibration keeps measurements accurate and traceable to a standard. Manufacturers specify how often this should be done because devices drift over time due to use, environment, and aging. Calibrating at least once a year, following those specifications, provides a reliable baseline so readings stay trustworthy without being excessive. Daily checks can flag obvious issues, but they don’t replace a formal calibration. Waiting as long as five years risks significant drift that could affect decisions and compliance, and monthly calibration is usually not required unless the manufacturer explicitly calls for it for that instrument. So, the best practice is to calibrate at least once a year in line with the manufacturer's guidance.